/**
 * Copyright (c) 2016 hustcc
 * License: MIT
 * Version: v1.0.1
 * GitHub: https://github.com/hustcc/canvas-nest.js
 **/
!
    function () {
      function n(n, e, t) {
        return n.getAttribute(e) || t
      }

      function e(n) {
        return document.getElementsByTagName(n)
      }

      function t() {
        var t = e("script"),
            o = t.length,
            i = t[o - 1];
        return {
          l: o,
          z: n(i, "zIndex", -1),
          o: n(i, "opacity", .5),
          c: n(i, "color", "0,0,0"),
          n: n(i, "count", 99)
        }
      }

      function o() {
        a = m.width = window.innerWidth || document.documentElement.clientWidth
            || document.body.clientWidth,
            c = m.height = window.innerHeight
                || document.documentElement.clientHeight
                || document.body.clientHeight
      }

      function i() {
        r.clearRect(0, 0, a, c);
        var n, e, t, o, m, l;
        s.forEach(function (i, x) {
          for (i.x += i.xa, i.y += i.ya, i.xa *= i.x > a || i.x < 0 ? -1
              : 1, i.ya *= i.y > c || i.y < 0 ? -1 : 1, r.fillRect(i.x - .5,
              i.y - .5, 1, 1), e = x + 1; e < u.length; e++) {
            n = u[e],
            null !== n.x && null !== n.y && (o = i.x - n.x, m = i.y - n.y, l = o
                * o + m * m, l < n.max && (n === y && l >= n.max / 2
            && (i.x -= .03 * o, i.y -= .03 * m), t = (n.max - l)
                / n.max, r.beginPath(), r.lineWidth = t
                / 2, r.strokeStyle = "rgba(" + d.c + "," + (t + .2)
                + ")", r.moveTo(i.x, i.y), r.lineTo(n.x, n.y), r.stroke()))
          }
        }),
            x(i)
      }

      var a, c, u, m = document.createElement("canvas"),
          d = t(),
          l = "c_n" + d.l,
          r = m.getContext("2d"),
          x = window.requestAnimationFrame || window.webkitRequestAnimationFrame
              || window.mozRequestAnimationFrame
              || window.oRequestAnimationFrame || window.msRequestAnimationFrame
              ||
              function (n) {
                window.setTimeout(n, 1e3 / 45)
              },
          w = Math.random,
          y = {
            x: null,
            y: null,
            max: 2e4
          };
      m.id = l,
          m.style.cssText = "position:fixed;top:0;left:0;z-index:" + d.z
              + ";opacity:" + d.o,
          e("body")[0].appendChild(m),
          o(),
          window.onresize = o,
          window.onmousemove = function (n) {
            n = n || window.event,
                y.x = n.clientX,
                y.y = n.clientY
          },
          window.onmouseout = function () {
            y.x = null,
                y.y = null
          };
      for (var s = [], f = 0; d.n > f; f++) {
        var h = w() * a,
            g = w() * c,
            v = 2 * w() - 1,
            p = 2 * w() - 1;
        s.push({
          x: h,
          y: g,
          xa: v,
          ya: p,
          max: 6e3
        })
      }
      u = s.concat([y]),
          setTimeout(function () {
                i()
              },
              100)
    }();